Package io.avaje.json.simple

Interface SimpleMapper

public interface SimpleMapper

A mapper for mapping to basic Java types.

This supports the basic Java types of String, Boolean, Integer, Long, Double and Maps and List of these.

For full support with more types and binding to custom types use avaje-jsonb instead.

Example

   static final SimpleMapper simpleMapper = SimpleMapper.builder().build();

   Map<String, Long> map = new LinkedHashMap<>();
   map.put("one", 45L);
   map.put("two", 93L);

   String asJson = simpleMapper.toJson(map);

 

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	SimpleMapper.Builder	Build the JsonNodeMapper.
static interface	SimpleMapper.Type<T>	Reading and writing with all options such and InputStream, Reader etc.

Method Summary

Modifier and Type	Method	Description
static SimpleMapper.Builder	builder()	Create a new builder for SimpleMapper.
default JsonExtract	extract(Map<String,Object> map)
Object	fromJson(JsonReader jsonReader)	Read the object from JSON.
Object	fromJson(String json)	Read the object from JSON string.
List<Object>	fromJsonArray(JsonReader jsonReader)	Read a List from JSON ARRAY.
List<Object>	fromJsonArray(String json)	Read a List from JSON ARRAY string.
Map<String,Object>	fromJsonObject(JsonReader jsonReader)	Read a Map from JSON OBJECT.
Map<String,Object>	fromJsonObject(String json)	Read a Map from JSON OBJECT string.
SimpleMapper.Type<List<Object>>	list()	Return a mapper for json ARRAY content with more reading/writing options.
SimpleMapper.Type<Map<String,Object>>	map()	Return a mapper for json OBJECT content with more reading/writing options.
SimpleMapper.Type<Object>	object()	Return a mapper for any json content.
PropertyNames	properties(String... names)	Return the property names as PropertyNames.
String	toJson(Object object)	Write the object to JSON string.
void	toJson(Object object, JsonWriter jsonWriter)	Write the object to JsonWriter.
<T> SimpleMapper.Type<T>	type(JsonAdapter<T> customAdapter)	Return a Type specific mapper for the given JsonAdapter.

Method Details

builder

static SimpleMapper.Builder builder()

Create a new builder for SimpleMapper.

object

SimpleMapper.Type<Object> object()

Return a mapper for any json content.

map

SimpleMapper.Type<Map<String,Object>> map()

Return a mapper for json OBJECT content with more reading/writing options.

list

SimpleMapper.Type<List<Object>> list()

Return a mapper for json ARRAY content with more reading/writing options.

toJson

String toJson(Object object)

Write the object to JSON string.

For options to write json content to OutputStream, Writer etc use SimpleMapper.Type.

 var list = List.of(42, "hello");

 var asJson = mapper.toJson(list);
 

toJson

void toJson(Object object,
 JsonWriter jsonWriter)

Write the object to JsonWriter.

For options to write json content to OutputStream, Writer etc use SimpleMapper.Type.

fromJson

Object fromJson(String json)

Read the object from JSON string.

fromJson

Object fromJson(JsonReader jsonReader)

Read the object from JSON.

fromJsonObject

Map<String,Object> fromJsonObject(String json)

Read a Map from JSON OBJECT string.

Use map() for more reading options.

fromJsonObject

Map<String,Object> fromJsonObject(JsonReader jsonReader)

Read a Map from JSON OBJECT.

Use map() for more reading options.

fromJsonArray

List<Object> fromJsonArray(String json)

Read a List from JSON ARRAY string.

Use list() for more reading options.

fromJsonArray

List<Object> fromJsonArray(JsonReader jsonReader)

Read a List from JSON ARRAY.

Use list() for more reading options.

properties

PropertyNames properties(String... names)

Return the property names as PropertyNames.

Provides the option of optimising the writing of json for property names by having them already escaped and encoded rather than as plain strings.

type

<T> SimpleMapper.Type<T> type(JsonAdapter<T> customAdapter)

Return a Type specific mapper for the given JsonAdapter.

Type Parameters:

T - The type of the class to map to/from json.

Parameters:

customAdapter - The custom adapter to use.

Returns:

The Type specific mapper.

extract

default JsonExtract extract(Map<String,Object> map)